package com.atguigu.common.handler;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 * 元数据处理器，可用于设置实体类字段的自动填充
 */
@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("开始执行插入自动填充...");
        this.strictInsertFill(metaObject,"createTime", LocalDateTime.class,LocalDateTime.now());
        this.strictUpdateFill(metaObject,"updateTime", LocalDateTime.class,LocalDateTime.now());
        log.info("插入自动填充结束...");
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("开始执行更新自动填充...");
        this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
        log.info("更新自动填充结束...");
    }
}
